NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Sat, Sep 5, 2026 at 7:26:27 pm CDT

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Key Messages: Plume of deeper tropical moisture combined with an upper level disturbance will lead to scattered to widespread showers/storms today. Some of these storms may be capable of producing locally heavy rainfall. Grounds in areas east of I-45 remain very saturated from previous rounds of rainfall. There is a Marginal Risk (level 1 of 4) of Excessive Rainfall for all of Southeast Texas today. Potential Impacts: Localized instances of street flooding, especially in low-lying areas, areas with poor drainage, and areas already saturated from previous rounds of rain. Rainfall rates of 2-3+”/hr possible in the heaviest downpours. Actions: Have multiple ways to receive alerts. Stay up to date with the latest forecasts.

Scattered to widespread showers and thunderstorms, especially east of I-45. Light southeasterly winds outside of any storms. Highs in the low to mid 90s.

Isolated showers/storms possible overnight, mainly west of I-45. Light and variable winds. Lows mainly in the mid to upper 70s.

Scattered to widespread showers and thunderstorms especially south of I-10. Light southerly winds outside of any storms. High temperatures in the low to mid 90s.

Daily chances for showers and thunderstorms continues going into next week. Highs will be in the upper 80s/90s with lows in the 70s/lower 80s.

Current Weather Observations...

Location	Time (CDT)	Weather	Vsby. (SM)	Temp. (ºF)	Dewpt. (ºF)	Hum. (%)	Wind (mph)	Wind Chill / Heat Index (ºF)	Pres. (in)
Bryan	18:35	Clear	10	85	73	67	E 9	92 [HI]	29.90
College Station	18:53	Clear	10	86	70	58	E 16G22	91 [HI]	29.88
Caldwell	18:35	Lightning Observed	10	91	68	46	E 6	95 [HI]	29.87
Huntsville	18:53	Clear	10	79	75	87	ESE 7	-	29.91
Navasota	18:15	Thunder In The Vicinity	10	83	75	77	SE 13	-	29.87
Brenham	18:55	Light Rain	10	83	72	70	ESE 10	-	29.87
Conroe	18:53	Light Rain	10	78	76	93	CALM	-	29.91
Cleveland	18:15	Lightning Observed	10				CALM	-	29.92
Liberty	18:55	Clear	10	78	78	100	E 3	-	29.89
Columbus	18:55	Partly Cloudy	10	89	74	61	SE 9	99 [HI]	29.87
Spring	18:53	Light Rain	8	80	76	87	ENE 6	-	29.89
Houston Intercontinental Aprt	18:53	Overcast	10	81	77	87	E 13	-	29.88
Katy/Brookshire	18:15	Clear	9	87	77	70	SE 5	99 [HI]	29.89
Texas Medical Center Heliport	18:15	Lightning Observed	10	87	71	58	VRB 3	93 [HI]	29.87
Sugar Land	18:53	Clear	10	87	73	63	SE 6	95 [HI]	29.87
Houston Hobby Airport	18:53	Mostly Cloudy	10	87	76	69	SE 9	98 [HI]	29.87
Arcola/Sienna	18:55	Clear	10	86	74	67	SE 5	95 [HI]	29.89
Pearland	18:53	Clear	10	86	76	72	SE 6	96 [HI]	29.90
Ellington Field	17:54	Mostly Clear	10	86	75	70	E 9	95 [HI]	29.86
La Porte	18:55	Clear	10	86	77	74	ESE 9	97 [HI]	29.90
Wharton	18:55	Clear	10	88	74	64	ESE 9	97 [HI]	29.87
Angleton/Lake Jackson	18:53	Clear	10	86	76	72	SE 7	96 [HI]	29.88
Galveston	18:52	Clear	10	85	76	74	ESE 7	94 [HI]	29.89
Bay City	18:15	Mostly Clear	10	88	78	72	SE 9	102 [HI]	29.82
Palacios	18:53	Clear	10	87	75	67	SE 14	97 [HI]	29.85
Rig 20 Miles SE of Matagorda	18:40		10	86	78	79	SE 7	98 [HI]	29.91

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